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The effect of calcium phosphate bone substitute on defect resolution around a rough-surfaced dental implants in dogs.

Authors
 Sungtae Kim ; Ui-Won Jung ; Seong-Ho Choi ; Yong-Keun Lee 
Citation
 Journal of biomedical materials research. Part B, Applied biomaterials , Vol.99(1) : 21~26, 2011 
Journal Title
 Journal of biomedical materials research. Part B, Applied biomaterials 
ISSN
 1552-4973 
Issue Date
2011
Abstract
Gap defects often exist around dental implants due to morphological differences between the natural tooth extraction socket and the dental implant. Techniques that can resolve such gap defects include implant surface modification and filling of the defects with bone substitutes. Modified surfaces are generally more effective in this regard than smooth surfaces. Favorable results have also been reported using bone substitutes. This study evaluated the effectiveness of a calcium phosphate (CaP) bone substitute for resolving gap defects around implant surfaces that have been treated with grit blasting and thermal etching. Implants were placed in edentulous areas in four mongrel dogs. Gap defects with a diameter of 2 mm were prepared surgically around the dental implants. These defects were either filled with CaP bone substitute (experimental group) or left unfilled (control group). Defects were evaluated after 8 and 16 weeks of healing. Block specimens were fixed, sectioned, and stained with hematoxylin and eosin. Histometric measurements revealed that healing in gap defects that had been filled with CaP bone substitute proceeded until 16 weeks. Total CaP degradation seemed to occur at between 4 and 8 weeks of healing. In conclusion, a more complete defect resolution was observed in gap defects filled with CaP bone substitute after 16 weeks than after 8 weeks of healing. The beneficial effects of filling in 2-mm gap defects around implants were attributed to the use of CaP bone substitute.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/93564
DOI
10.1002/jbm.b.31867
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Dental Engineering
1. 연구논문 > 2. College of Dentistry > Dept. of Prosthodontics
1. 연구논문 > 2. College of Dentistry > Dept. of Periodontology
Yonsei Authors
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Link
 http://onlinelibrary.wiley.com/doi/10.1002/jbm.b.31867/abstract
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